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2 new craters observed on Nishinoshima

The Yomiuri Shimbun

In this photo taken from a Yomiuri Shimbun aircraft, volcanic smoke rises from craters on Nishinoshima island on Tuesday.

The Yomiuri Shimbun Lava has been seen flowing out of craters on Nishinoshima island — where a volcanic eruption recently occurred for the first time in 1 year and five months — reaching the coast on Tuesday.

It was confirmed by a Yomiuri Shimbun aircraft on the day.

“The volcanic activity is certainly lively, as at least two craters have newly formed,” said Fukashi Maeno, an associate professor of volcanic geology at the University of Tokyo’s Earthquake Research Institute who was on board the aircraft. “I think the island will expand more.”

The eruption was confirmed on April 20 on the island, which is under the jurisdiction of Ogasawara, Tokyo, and located about 1,000 kilometers south of central Tokyo. The Japan Meteorological Agency issued a warning for the area near the crater. The previous eruption on the island took place on November 2015.

From the aircraft, eruptions could be seen occurring about dozens of seconds apart on Tuesday, with clumps of lava and gray smoke rising hundreds of meters into the air from the craters. A stream of glowing lava was also seen forking toward the west and the south sides of the island. On the west side, the lava was observed reaching the sea.

The latest eruptions are classified as “Strombolian type” eruptions that comprise a series of outbursts of cinders and clumps of lava, according to the Japan Coast Guard.

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[Released on April 25, 2017]

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